From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com>
Cc: Shrikanth Hegde <sshegde@linux.vnet.ibm.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
"Nysal Jan K . A" <nysal@linux.ibm.com>
Subject: Re: (subset) [PATCH 0/6] powerpc/qspinlock: Fix yield latency bug and other
Date: Fri, 27 Oct 2023 20:59:56 +1100 [thread overview]
Message-ID: <169840079683.2701453.18141545904760773435.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20231016124305.139923-1-npiggin@gmail.com>
On Mon, 16 Oct 2023 22:42:59 +1000, Nicholas Piggin wrote:
> This fixes a long-standing latency bug in the powerpc qspinlock
> implementation that quite a few people have reported and helped
> out with debugging.
>
> The first patch is a minimal fix that avoids the problem. The
> other patches are streamlining and improvements after the fix.
>
> [...]
Applied to powerpc/next.
[2/6] powerpc/qspinlock: stop queued waiters trying to set lock sleepy
https://git.kernel.org/powerpc/c/f6568647382c667912245c8d07aa26c9c6d4d0c8
[3/6] powerpc/qspinlock: propagate owner preemptedness rather than CPU number
https://git.kernel.org/powerpc/c/fd8fae50c9c6117c4e05954deab2cc515508666b
[4/6] powerpc/qspinlock: don't propagate the not-sleepy state
https://git.kernel.org/powerpc/c/fcf77d44274b96a55cc74043561a4b3151b9ad24
[5/6] powerpc/qspinlock: Propagate sleepy if previous waiter is preempted
https://git.kernel.org/powerpc/c/1e6d5f725738fff83e1c3cbdb8547142eb8820c2
[6/6] powerpc/qspinlock: Rename yield_propagate_owner tunable
https://git.kernel.org/powerpc/c/b629b541702b082d161c307c9d7d9867911fc933
cheers
prev parent reply other threads:[~2023-10-27 10:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-16 12:42 [PATCH 0/6] powerpc/qspinlock: Fix yield latency bug and other Nicholas Piggin
2023-10-16 12:43 ` [PATCH 1/6] powerpc/qspinlock: Fix stale propagated yield_cpu Nicholas Piggin
2023-10-16 12:43 ` [PATCH 2/6] powerpc/qspinlock: stop queued waiters trying to set lock sleepy Nicholas Piggin
2023-10-20 9:50 ` Nysal Jan K.A.
2023-10-16 12:43 ` [PATCH 3/6] powerpc/qspinlock: propagate owner preemptedness rather than CPU number Nicholas Piggin
2023-10-16 12:43 ` [PATCH 4/6] powerpc/qspinlock: don't propagate the not-sleepy state Nicholas Piggin
2023-10-16 12:43 ` [PATCH 5/6] powerpc/qspinlock: Propagate sleepy if previous waiter is preempted Nicholas Piggin
2023-10-16 12:43 ` [PATCH 6/6] powerpc/qspinlock: Rename yield_propagate_owner tunable Nicholas Piggin
2023-10-18 7:41 ` [PATCH 0/6] powerpc/qspinlock: Fix yield latency bug and other Shrikanth Hegde
2023-10-20 10:04 ` Nysal Jan K.A.
2023-10-20 12:01 ` (subset) " Michael Ellerman
2023-10-27 9:59 ` Michael Ellerman [this message]
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